How to import a movie file in Blender 2.8 and 2.79 with Python?
sorry, I forgot to add a script and mistakenly specified this filepath.
I can run the below script.
Thanks.

import bpy, os
os.system("chcp 65001")

# I need this script.
bpy.context.area.type = 'SEQUENCE_EDITOR'

# and I need "filepath=".
bpy.ops.sequencer.movie_strip_add(filepath=r"O:\GK\Sozai\Sozaibitmap.mp4")
```